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Finding the Fourth Proportional to 460,404.24, 690,664.68 and 127,980.24

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Solution

The fourth proportional to 460,404.24, 690,664.68 and 127,980.24 is: 191,986.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,404.24 : 690,664.68 = 127,980.24 : x
  2. Step 2: Convert to fraction form
    460,404.24/690,664.68 = 127,980.24/x
  3. Step 3: Cross multiply
    460,404.24x = 690,664.68 × 127,980.24
  4. Step 4: Simplify right side
    460,404.24x = 88,391,431,505.92
  5. Step 5: Solve for x
    x = 88,391,431,505.92/460,404.24
  6. Step 6: Final answer
    x = 191,986.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.